Sega Transformers Human Alliance - Repair & Maintenance for Controller Part; 11-1 Repair and maintenance for motor; 11-2 Repair and maintenance for controller handle infrared.

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11. REPAIR & MAINTENANCE FOR CONTROLLER PART
Follow the below method to take apart the controller cover.
11-1 Repair and maintenance for motor
11-2 Repair and maintenance for controller handle infrared.
Unscrew 8PCS of M4*12
with 2.5mm hexagonal key
Start the game, put an opaque
object into the infrared detector
grooves, and check whether the
infrared detector is workable.
Always keep the infrared detector
muzzle clean.
Unplug the motor wire connector,
and test it with 200 ohms
multi-meter and the normal
value should be 6.7ohms.
11. REPAIR & MAINTENANCE FOR CONTROLLER PART
http://op.sega.jp/op_e/